Improvement in concealed hinges



UNITED STATES PATENT OFFICE.

FREDERICK WOOD, OF BRlDGEPORT, CONNECTICUT.

lMPROVEMENT IN CONCEALED HINGES.

Speciiicatiou forming part of Letters Patent No. 41,956, dated March 15, 1864.

To all whom it may concern Be it known that I, FREDERICK Woon,

.of Bridgeport, in the county of Fairfield,

State of Connecticut, have invented a new and improved form ot' concealed hinges for carriage-doors and other doors where the same may be suitably used; and I do hereby declare that the following is a full and exact description ot' the same, refe-rence being had to the accompanying drawings, and to the letters ot' reference marked thereon.

Figure l represents the hinge complete. F.g. 2 represents the movable or swinging division of the hinge.

The fixed division ot' the hinge (marked A in Fig. l) is fastened by screws through its plate a to the door-post, and the movable or swinging division B has its plate fastened by screws to the edge of the door.

In ordinary concealed hinges the two divisions ofthe hinge are permanently connected iogether, the hin ge-pin f being riveted at bot-h (nds, thus preventing any separation of the two divisions, and no separation being contemplated the openingOin the plate al, through which the arm C swings, has no enlargement above the said arm, such as is represented in the drawings at O. When, therefore, it becomes desirable to detach and remove the carriage-door from the carriage,it is necessary to remove the screws from one ot' the hin ge-plates,

thus releasing the door, and in replacing the door to screw the hingeplate into place againoperations requiring considerable time and trouble, and in the course of which the carriage is liable to be marred and injured.

My improvement consists in so constructing the hinge that the two divisions may be readily separated by the simple process of lii'ting and withdrawing the door. In my hinge the pinfis fixed in the arm C, but slips freely in and out of its seat Z, in the other division ot' the hinge. To enable the arm C when in place to be thus lifted 'with its pin f, the opening O in the plate a, through which said arm swings and moves, is enlarged upward, as

represented by the opening O above the said arm C. The division B ot'the hinge, therefore, when the door is open and the hinge stands as shown in Fig. l, may be lifted and Withdrawn from its place and may be afterward replaced in position without dii'culty or disturbance to any part of the carriage.

What I claim as my invention is- The enlarged opening O, in combination with the free hinge-pin j', constructed and operating in manner as described, or in any other manner substantially the same.

FREDERICK WOOD. Witnesses:

H. T. BLAKE, JOHN S. READ. 

